[Debian-l10n-devel] Bug#866551: translate-toolkit: ftbfs when multiple python 3 versions are supported

[Scott Kitterman]

On Fri, 30 Jun 2017 14:28:11 +1200 Michael Hudson-Doyle 
<michael.hudson at ubuntu.com> wrote:
> Source: translate-toolkit
> Version: 2.0.0-1
> Severity: important
> User: debian-python at lists.debian.org
> Usertags: python3.6
> 
> Dear Maintainer,
> 
> The build fails in very strange ways when multiple Python 3 versions are
> supported, e.g. if 3.5 is default and 3.6 is supported you get this when
> running the Python 3.6 tests:
> 
> __________________________ test_open_office_to_xliff 
___________________________
> 
>     @pytest.mark.skipif('TTKIT_SKIP_COMMANDS' in os.environ,
>                         reason='Skip testing command line tools')
>     def test_open_office_to_xliff():
> >       assert call(['oo2xliff', 'en-US.sdf', '-l', 'fr', 'fr']) == 0
> E       assert 1 == 0
> E        +  where 1 = call(['oo2xliff', 'en-US.sdf', '-l', 'fr', 'fr'])
> 
> test_xliff_conformance.py:67: AssertionError
> ----------------------------- Captured stderr call 
-----------------------------
> Failed to import the site module
> Traceback (most recent call last):
>   File "/usr/lib/python3.6/site.py", line 79, in <module>
>     import os
>   File "/usr/lib/python3.6/os.py", line 652, in <module>
>     from _collections_abc import MutableMapping
>   File "/usr/lib/python3.6/_collections_abc.py", line 64
>     async def _ag(): yield
>                     ^
> SyntaxError: 'yield' inside async function
> 
> What's happening here is that the oo2xliff binary has been built to use the
> default Python 3 (3.5) but the way that test_xliff_conformance.py sets up 
the
> environment means that oo2xliff tries to import site.py from _Python 3.6_. 
And
> this doesn't work.
> 
> I poked a little at trying to fix this but didn't really get anywhere. 
Perhaps
> the simple fix is just to support the default version of Python 3.

We now have multiple python3 versions supported in Debian, so bumping to 
serious.

Scott K